(华中科技大学 煤燃烧国家重点实验室 , 武汉 430074)
摘 要: 通过对环式阳极焙烧炉的热工过程进行系统理论分析, 建立了焙烧炉热工过程的数学模型。 对焙烧炉进行模拟计算的结果表明: 焙烧过程中阳极内部温差最大的地方主要集中在炉顶,应采取相应的措施减少炉顶的热损失以保持阳极焙烧温度的均匀性; 同时, 不同的火焰循环时间和空气渗漏对焙烧的能耗影响较大, 降低火焰循环时间将导致能耗增加, 而降低空气渗漏量则可极大地降低能耗。
关键字: 焙烧炉; 热工过程; 数值模拟
(National Laboratory of Coal Combustion,
Huazhong University of Science and Technology,
Wuhan 430074, China)
Abstract:Through the systematic analysis of ring anode baking process, a mathematical model was developed. Several simulation runs were then made. The simulated results indicate that the maximal temperature gradient is focus on the top of anodes. In order to preserve the uniformity and stability of the baking temperature in anodes, some relevant measures to reduce this heat loss should be taken. It is also found that the fuel consumption increases with the decrease of firing cycle time, and cutting down the air infiltration will be helpful for saving fuel.
Key words: baking furnace; heat transfer; numerical simulation